4257 Ubasti (1987 QA)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4683594313 ± 4.35e-09
Semi-major axis (a)1.6471372987 AU ± 3.96e-10
Inclination (i)40.72180734° ± 5.74e-07
Long. of Asc. Node (Ω)169.14106442° ± 8.38e-07
Arg. of Perihelion (ω)278.95769231° ± 8.58e-07
Mean Anomaly (M)347.42839566° ± 6.71e-07
Mean Motion (n)0.4662486353°/day ± 1.68e-10
Perihelion dist (q)0.87568501 AU ± 7.17e-09
Aphelion dist (Q)2.41858959 AU ± 7.19e-09
Orbital Period2.11394996 yr ± 7.62e-10
Physical Parameters
H (abs. magnitude)15.96
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.081″
Uncertainty0
Orbit TypeApollo
MOID0.169642 AU
Observations Used2750
Gaia Obs Used109
Oppositions15
Arc Total1987-2026
First Observation Used1987-08-23
Last Observation Used2026-04-08
Observations (2997)
Date Type RA Dec Mag Band Observatory
2022-06-03 07:21:18 C 15 37 55.513 +42 18 37.55 V G96
2022-06-03 07:28:51 C 15 37 55.088 +42 18 35.86 V G96
2022-06-03 07:36:25 C 15 37 54.674 +42 18 34.13 V G96
2022-06-05 08:25:38 C 15 35 17.884 +42 06 40.50 U F52
2022-06-05 08:41:18 C 15 35 17.039 +42 06 36.45 U F52
2022-06-05 08:44:41 C 15 35 16.537 +42 06 33.73 V 703
2022-06-05 08:52:28 C 15 35 16.084 +42 06 31.25 V 703
2022-06-05 08:56:57 C 15 35 16.190 +42 06 32.26 U F52
2022-06-05 09:08:05 C 15 35 15.284 +42 06 27.50 V 703
2022-06-05 09:12:39 C 15 35 15.341 +42 06 28.08 U F52
2022-06-08 07:45:39 C 15 31 42.593 +41 45 44.10 V 703
2022-06-08 07:53:26 C 15 31 42.164 +41 45 42.26 V 703
2022-06-08 08:01:14 C 15 31 41.761 +41 45 40.07 V 703
2022-06-08 08:09:01 C 15 31 41.426 +41 45 37.30 V 703
2022-06-09 04:59:09 C 15 30 42.379 +41 38 46.79 U I41
2022-06-09 06:19:52 C 15 30 38.460 +41 38 19.61 U I41
2022-06-09 07:24:42 C 15 30 35.309 +41 37 57.29 U I41
2022-06-09 07:55:10 C 15 30 33.850 +41 37 46.88 U I41
2022-06-17 05:44:58 C 15 22 49.181 +40 21 24.30 U I41
2022-06-17 06:59:22 C 15 22 46.481 +40 20 49.99 U I41
2022-06-17 07:26:17 C 15 22 45.550 +40 20 37.90 U I41
2022-06-17 09:11:32 C 15 22 41.731 +40 19 48.00 U I41
2022-06-21 07:10:09 C 15 19 43.892 +39 33 59.58 V G96
2022-06-21 07:18:12 C 15 19 43.666 +39 33 55.40 V G96
2022-06-21 07:26:16 C 15 19 43.417 +39 33 51.16 V G96
2022-06-21 07:34:19 C 15 19 43.176 +39 33 47.05 V G96
2022-07-01 05:09:23 C 15 14 44.861 +37 20 20.18 U I41
2022-07-01 06:21:47 C 15 14 43.750 +37 19 35.90 U I41
2022-07-08 04:16:30 C 15 13 19.290 +35 35 28.43 V G96
2022-07-08 04:23:55 C 15 13 19.247 +35 35 23.46 V G96
2022-07-08 04:31:20 C 15 13 19.211 +35 35 18.96 V G96
2022-07-08 04:38:44 C 15 13 19.204 +35 35 13.38 V G96
2022-07-08 04:48:22 C 15 13 19.168 +35 35 07.73 V G96
2022-07-08 04:55:53 C 15 13 19.117 +35 35 03.05 V G96
2022-07-08 05:03:23 C 15 13 19.060 +35 34 57.94 V G96
2022-07-08 05:10:52 C 15 13 19.013 +35 34 53.22 V G96
2023-06-13 10:41:39 C 00 01 47.215 +16 59 47.18 V G96
2023-06-13 10:49:46 C 00 01 47.932 +16 59 48.52 V G96
2023-06-13 10:57:53 C 00 01 48.630 +16 59 49.81 V G96
2023-06-13 11:06:01 C 00 01 49.343 +16 59 51.22 V G96
2023-06-30 13:51:51 C 00 40 10.270 +17 38 41.39 V T05
2023-06-30 13:56:05 C 00 40 10.680 +17 38 42.07 V T05
2023-06-30 14:03:18 C 00 40 11.407 +17 38 42.22 V T05
2023-06-30 14:19:17 C 00 40 12.926 +17 38 42.22 V T05
2023-07-01 10:54:59 C 00 42 16.783 +17 38 41.32 V 703
2023-07-01 10:58:48 C 00 42 17.201 +17 38 40.70 V 703
2023-07-01 11:02:37 C 00 42 17.539 +17 38 41.24 V 703
2023-07-01 11:06:27 C 00 42 17.935 +17 38 40.92 V 703
2023-07-06 09:44:13 C 00 54 31.194 +17 34 04.84 V G96
2023-07-06 09:52:25 C 00 54 32.065 +17 34 04.37 V G96